right on, i have already searched for UDP in all the forums and have seen more negative feedback than positive. Most of the people that don't like them have not installed them (obviously). The few people that I have seen with them seem to like em and 1 or 2 has seen bad results (oil leakage from seals, etc.). I am aware of the damage that they are capable of causing but wanted to know under what conditions (rpms, mileage, etc.) do people see the most negative results.
